George f



(No Model.)

G. If. OBHMEN.

UNISON DEVIOE.

Patented June 4, 1889.

"I: noRms PETER: co., vlAsnmamN, n. c

UNITED STATES PATENT OFFICE.

GEORGE F. OEHMEN, OF NE\V YORK, N. Y.

UNLSON DEVICE.

SPECIFICATION forming part of Letters Patent No. 404,426, dated June 4, 1889.

Application filedJune 16, 1888. Serial No. 277,372. Gib mudelfi To all whom, it may concern:

Be it known that I, GEORGE F. OEHMEN, of the city, county, Eellfl State of New York, have made new and useful Improvements in Unison Devices, of which the followingis a specificaarmature of the controlling-magnet is permitted to recede from the core of the magnet to such a distance that under the normal strength of battery the'armature will be out of the field of magnetic'influenee, and there--v fore cannotwithdraw the" pin from the slot; but when an increase of battery-power is sent over the line sufficient to attract the armature of the controlling-magnet the pins in all the escapement-wheels throughout the circuit will be simultaneously withdrawn from the slots,

' and the escapement-wheels will thus start in unison with the transmitter at the central station. 7

My invention also consists in. certain ar-' rangement of parts at the sending-station in connection with the transmitter and. batteries, by means of which the strength of the current sent over the line to the operatingessary batteriesand connections for the proper working of my invention.

In the drawing, a is the shaft of the transmitter, to which is rigidly attached thewheels b c d. This shaft also has a crank-handle e for the purpose of rotating the shaft.

surface of the wheel Z).

g is a contact-spring connected to'the full battery 0 at point h. This spring g engages with the single tooth 'L', which is on wheel t.

gagement with the teeth of wheel (I, and connected to one-half of battery Q at the point It. At B is another transmitter, which is used to bring all the wheels in the circuit in unison with the transmitter B. This transmitter B has a shaft a, to which is also rigidly attached the disk or wheel b and the toothed wheel d.

cuit making and breaking points as there are teeth in the escapement-wheel L at the sev; eral sub-stations.

these disks or wheels.

f is a contact-spring constantly resting upon the surface of the wheel I) and connected to the line I). j is anothercontacte spring arranged to make contact with the teeth of the break-wheel d, and connected by wire 9' to half the battery 0 at the point 10,.

stations A. At station A, L is a ratchet-wheel mounted upon the shaft 1. l n and n are branches of the lever-extension of the armature M. Secured to branch 12 is the ratchet-pawl m, by means of the serew'm. m is a spring-piece holding the pawl m in the dog into a tooth of wheel L, so that the wheel L cannot move backward, Pawl p is an adjustable set screw controllingthe ordinary distance of vibration of the lever M.

for purposes hereinafter to-be described;

tion of the lever extension M of the armatuie' r, to which it is'securely fastened. tractile spring attached t'othc lever M, acting to withdraw the lever from the magnet wherever the currentis broken.

is as follows: WVhenever the outlying stations are to be operated, in order to insure corref is a spring constantly resting upon the Transmitter B also has a crank-handle c for the purpose of. rotating.

(1 is a slot into which the set-screw 1) falls S is a re- The operation of the invention, as a whole,

7" is another contact-spring intended for en'- This toothed wheel has'as many teeth or cir- D is the line-wire to and from the outlying contact with teeth of wheel L. Secured to the frame E isthe dog 0 and spring 0, holding F is an electro-magnet controlling the mo spondence between stations A and the central station 1 the operator at the central station first operates transmitter 1; by turning the crank-handle e at least one complete revolution; This will cause as many makes and breaks of the current as there are separate contactrpoints in the wheel (1'. By the action of the pawl m upon the eseapement wheel L this wheel will be rotated step by stop until Now the transmitter 13 is operated by means of the crank-handle e. The first movement will cause contact between the tooth 2' of wheel c and spring g, causin the full power of bat tery O to be sent over the line D with sufficient power to attract armature r to its magnet F. This movement lifts pin I out of the unison-slot and moves the wheel L one step.

Each successive movement of wheel (Z throws a tooth on that wheel into contact with spring 7', and half the battery is sent over the line operating the step-by-step movement.

From this description it can be readily understood that a series of stations like A under control'of a transinittencan be brought into correspondence and kept in unison with the transmitter by the increase or decrease of current sent from the central station. As soon as the zero-slot in any escapement-wl'ieel arrives in conjunction with the pin 1, it will of course be locked at unison and remain locked ,until tooth 2' brought into contact with spring 9, when the full power of battery 0 will lift all the pins out of the unison-slots at the same time and they will begin to re volve in unison with the transmitter B.

If desired, a disk secured to'the shaft 1, ad-

. jacent to escapement L, can carry the zeroslot and accomplish the same purpose as indicated in dotted lines in the drawings; In this construction, obviously, the prong n of armature M is to be bent out of the plane of theratchetavheel, so as to be in position to engage the notched disk placed besidcthe same. It will thus be understood that ii in practice, prior to each operation of transmitter 13, transmitter-B is completely revolved each station will have its escapement-wheel at the unison-point ready to start under control of transmitter 13 inv unison with the transmitter, it being also understood that the crank of transmitter Bis always to be left after each operation in such position that the first movement of the transmitter-handle 6 will place spring (1 in contact with tooth i, By this invention transmitter 13' brings all -the instruments on the linc into unison with the transmitter .15 and locks them there, and all the instruments will then start from the unison-point together and in unison with the transmitter. V I \rVhat I claim, and desire to secure by. Letters Patent, is-- 1 1. The combination of a step-by-stepmechanism having a moving part formed with a unison-notch, a unison-stop normally resting in said notch and holding the step-by-step mechanism from movement when resting therein and until removed therefrom by an abnormal amount of power, a battery, a line, and an'included magnet controlling said stepby-step mechanism, a unison-transmitter loeated insaid line and connected at an inter mediate point of the battery, so as to transmit a diminished amount of energy/to said step-by-step mechanism, and a second transmitter located in the line eonnectcd'wit-h said battery controlling the full amount thereof, whereby the unison-stop will be dislodged from its notch by thefull amount of current and the step-by-step mechanism opera-ted by the normal current i 2. The combination of a step-by-step mechanism, a unison therefor holding said step-' by-step mechanism from operation under normal currents when held at unison, a battery, a line-wire, and an included electromagnet controlling said step-bystep mechanism, and a transmitter located in the line and connected to battery at more than two points and itself governing both the full and partial amount of battery thrown on said line.

3. In aunison device, the combination of step-by-step mechanism having a moving part line and controlling at will part or all of the battery-power transmitted to the magnet, the

said armature having a range of movement such that when the armature is in full open position to close the unison-stop the'diminished amount of current will not induce it but the full amount will, substantially as and for the purpose setforth.,

. 4. In a unison device, the combination of step-bystep mechanism having a moving part provided with a unison-notch, anielectro-magnet iraving a spring-retracted armature provided with a unison-stop for engaging the unison-notch, a battery and a connected line, including the said magnet, two transmitters located in; the line, one controlling only a part of the battery and theother controlling both a for the purpose set forth.

imity thereto when in fpll open position and the diminished amount of currentis thrown on the magnet and operated by the full amount of the current, substantially as de scribed, two transmitters located in the line with the magnet, the one controlling only a part of the battery and the other both a part and all of the battery, substantially as and 6. A combined step-by-step mechanism and unison consisting in an operating-magnet having a pivoted spring-retracted armature with a spring-pawl and a unison-stop, both mounted thereon, a rotary spindle provided with a ratchet-Wheel, and a detent for the wheel,- said ratchet operated step by step by the engagin pawl of the armature under the vibrations of the latter, the rotating part of said in echanism provided with a unison-notch engaged by the unison-stop carried by the said armature, substantially as and for the purpose set forth.

7. The combination of the operating-magnet having a pivoted spring-retracted armature provided near one end with an adjustable unison-stop, a spring-pawl mounted on the armature near the end thereof bearing the stop, a ratchet-wheel having a detent and formed with a unison-notch engaged by the stop on the armature.

V 8. The combinationof a operating-magnet having a tracted armature ratchet-wheel, an pivoted spring-reprovided with a forked end v spanning the ratchet-wheel, and having a spring-pawl for engaging the ratchet and retating it step by step under the vibrations of the armature, a detent for the ratchet, one prong of said forked armature provided with a unison stop for checking the movement of the ratchet, the other prongthereof provided with an adjusting-screw for regulating the throw-of the magnet in its vibrations, substantially as and for the purpose set forth.

9. The combination of a step-by-step mechanism having a unison-stop for checking its movement, the ele(*.ti 'o-magnet ll, controlling said-mechanism and stop, battery (land line D, connected thereto, the transmitter 1-3, consisting inshaft or, provided with contact-disk Z) and break-Wheels c and (Z, the contact-furv ger f; engaging disk I) and in line D, the contact-finger e, engaging the break-wheel 'c and in line D, the contact-finger j, connected to an intermediate point of battery 0, and en gaging with break-Wheel d, the transmitter B, consisting in the shaft a, provided with contact-disk b and break-Wheel ll, the contact-finger f, in line D and engaging disk I),

and the contact-finger], engaging wheel (1 and connected to an intermediate point of the 'on the rotating part of the mechanism, and the spring-pawl m, mounted on the armature and engaging the ratchet-Wheel, substantially as and for the purpose set forth.

1].. The combination of the ratchet-wheel L, formed with a notch and provided with a detent to prevent backward movement of the ratchet, the operating-magnet F, having the pivoted spring-retracted armature M, formed with the prongs n n, the unison-stop 11,

mounted on the armature and adapted to engage the notch in the rateliet-wlieel, and the spring-acted pawl rm, engaging the teeth of the ratchet and advancing the' wheel step by step under the vibrations of the armature, substantially as and for the purpose set forth.

GEO. I ()l llIM EN.

Witnesses:

JoHN E. ll'lClCWAN, P. 'lILLINdHAs'r, Jr. 

